n.提炼物，提取剂...

extractant的音标：extractant的英式发音音标为：[ɪks'træktənt]extractant的美式发音音标为：[ɪks'træktənt]...

The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted.该萃取剂选择性高,它仅萃取Au 、 Pd和Hg等几种元素.An extractant - screening method with a vapor - liquid equilibrium apparatus in the extractive distillation was i...